01 -
Pour whole milk, heavy cream, and sweetened condensed milk into the slow cooker and stir to combine.
02 -
Incorporate both semi-sweet and milk chocolate chips into the mixture.
03 -
Cover and cook on low for 2 hours, stirring every 30 minutes to ensure the chocolate melts smoothly.
04 -
Once the chocolate is fully melted and smooth, stir in the vanilla extract.
05 -
Reduce the heat to warm, ladle the hot chocolate into mugs, and top with mini marshmallows or preferred toppings before serving immediately.